a well is dug out whose radius is 4.2 M and depth is 38 M the earth taken out from where is spread all over a rectangular field whose dimensional 130 into 150 metre find the rise in the field

Lets 1st find the volume of the mud dug out. Formula used will be r²h. Hence we have volume = 22/7 × (7/2)² × 20 We also have the volume of the cuboid at L x B x H Here L = 22 and B = 14, we need to find H Since the two volumes are equal, we have 22 x 14 x H = 22/7 × (7/2)² × 20 Hence we get the Height of the platform as 2.5m
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